Carbureter.



A. S. BERGEN.

CARBURETER.

APPLICATION FILED SEPT. 15. 1915.

1 9296,45 1. Patented Mar. 4, 1919.

2 SHEETS-SHEET I A- S BERGEN.

CARBURETER.

,APPLlCATlbN FILED SEPT. 15. 1915.

Patented Mar. 4,1919.

2 SHEETS-SHEET 2.

vwamtoz ABBA-M SCHENCK BERGEN, OF NEW YORK, N. Y.

CARBUBETER.

Specification of Letters Patent.

Patented Mar. 4, 1919.

Application filed September 15, 1915. Serial No. 50,787.

To all whom it may concern:

Be it known that I, ABRAM SoHnNoK BER- GEN, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Carbureters, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

My invention relates to carbureters of the automatic type, in which the mixing chamber consists of a cylinder with air intake ports in the side walls thereof and which is provided with a piston which operates in said cylinder with air ports in its side walls, adapted to register in whole or in part with the air intake ports in the side walls of the cylindrical mixing chamber when the piston is automatically raised by the suction of the engine, and the object of my invention is to provide a structure in which the piston may be rotated upon its axis in any position of elevation without changing the effective area of the air intake ports uncovered. This and the other objects and essential features of my invention are pointed out in the following specification, and in the appended claims. I attain these objects by the mechanism illustrated in the accompanying drawings, which disclose the preferred form of my invention.

Figure 1 is an elevation of my invention. Fig. 2 is a sectional view on the line XX of Fig. 1. Fig. 3 is a sectional view on the line YY of Fig. 2.

Similar characters of reference refer to similar parts throughout the accompanying drawings.

My carbureter consists of a cylindrical shell 1, which constitutes the mixing chamber. The side walls of the cylindrical shell 1 are cut away to provide air intake ports 2 and 3, the port 2 being arranged in the plane above the plane of the port 3, and dividing the cylindrical shell 1 into three cylinders which are secured together by the outstanding ribs 4 and 5. Mounted within the cylinder is the piston valve 6 which is provided with two series of ports 7 and 8, the ports 7 being arranged in a plane above the plane of the ports 8, and the walls of the piston being adapted to close the ports 2 and 3 when the piston is at rest, and the ports 7 being adapted to register in whole or in part with the port 2, and the ports 8 with the port 3, when the piston is elevated by the suction of the engine. Carried by the piston valve is a hood 9, with ports 10 discharging into the mixingchamber. Suspended from the piston is a tapered needle valve 11 which projects downwardly into a fuel nozzle 12, which is surrounded by an air nozzle 13 to which air is admitted through the base and which discharges into the hood 9. Mounted in the flange neck 14 is a throttle valve 15. Liquid fuel is supplied to the fuel nozzle 12 from the float feed chamber 16 through the passage 17. As the cylindrical sections are joined together by outstanding ribs, it is apparent that when the piston valve 6 has been elevated to any position in which the ports 7 and 8 register in whole or in part with the continuous circumferential ports 2 and 3, the piston may be rotated to any position upon its axis without varying the effective area of the ports so uncovered,

or substantially affecting the flow of air therethrough. This feature is of importance, as any means employed to prevent rotation of the piston is likely to cause it to bind so that it will not rise or fall, and, therefore, will not function.

Having described my invention, I claim:

A carbureter comprising a plurality of cylinders arrangedone above the other on a common axis and secured to each other by outstanding ribs which form a continuous annular inlet port between the adjacent ends of the cylinders, a suction operated piston valve provided with ports in its side walls adapted to register with the continuous annular air inlet port when the valve is elevated, a carbureting chamber, a fuel inlet adapted to discharge into the carbureting chamber and a throttle valve.

Signed at New York city, in the county of New York and State of New York, this 27th day of August, 1915.

ABRAM SOHENCK BERGEN.

Witnesses:

MARGARET A. Hnox, BENJAMIN T. ABRAMs.

Copies of this patent may be obtained for five cents cash, by dressing the "Commissioner 02 Istontl.

. Washington, D. 0. 

